#ifndef NODE_NODEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
#define NODE_NODEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66

#if defined(_MSC_VER) ||                                            \
    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
     (__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
#pragma once
#endif

#include <map>
#include <vector>

#include "yaml-cpp/anchor.h"
#include "yaml-cpp/node/ptr.h"

namespace YAML {
namespace detail {
class node;
} // namespace detail
} // namespace YAML

namespace YAML {
class EventHandler;
class Node;

class NodeEvents {
public:
    explicit NodeEvents(const Node& node);
    NodeEvents(const NodeEvents&) = delete;
    NodeEvents(NodeEvents&&) = delete;
    NodeEvents& operator=(const NodeEvents&) = delete;
    NodeEvents& operator=(NodeEvents&&) = delete;

    void Emit(EventHandler& handler);

private:
    class AliasManager {
    public:
        AliasManager() : m_anchorByIdentity{}, m_curAnchor(0) {}

        void RegisterReference(const detail::node& node);
        anchor_t LookupAnchor(const detail::node& node) const;

    private:
        anchor_t _CreateNewAnchor() { return ++m_curAnchor; }

    private:
        using AnchorByIdentity = std::map<const detail::node_ref*, anchor_t>;
        AnchorByIdentity m_anchorByIdentity;

        anchor_t m_curAnchor;
    };

    void Setup(const detail::node& node);
    void Emit(const detail::node& node, EventHandler& handler,
              AliasManager& am) const;
    bool IsAliased(const detail::node& node) const;

private:
    detail::shared_memory_holder m_pMemory;
    detail::node* m_root;

    using RefCount = std::map<const detail::node_ref*, int>;
    RefCount m_refCount;
};
} // namespace YAML

#endif // NODE_NODEEVENTS_H_62B23520_7C8E_11DE_8A39_0800200C9A66
